Science News reports that the class of ancient marine invertebrates known has Hyoliths, which had previously been uncategorized has now been firmly pegged as lophophorates after an analysis of more than 1,500 fossils, including preserved soft tissue. Living members of the lophorate family include a group whose living members include horseshoe worms and lamp shells,The soft-bodied creatures, encased in conical shells, concealed U-shaped guts and rings of tentacles called lophophores that surrounded their mouths. Fossil analysis suggests that hyoliths used those tentacles and spines, called helens, to trawl the seafloor more than 500 million years ago, researchers report online January 11 in Nature.sciencenews.org/blog/science-ticker/anci...wochit.com